CN104823474B - Radio Link Failure report method and user equipment in mobile communications network - Google Patents
Radio Link Failure report method and user equipment in mobile communications network Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000010295 mobile communication Methods 0.000 title claims abstract description 15
- 238000005259 measurement Methods 0.000 claims abstract description 151
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- 230000001960 triggered effect Effects 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 5
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/04—Arrangements for maintaining operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/0085—Hand-off measurements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/18—Management of setup rejection or failure
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
Abstract
The present invention provides a kind of method that UE measuring state information is reported in RLF report.UE implements wireless measurement for serving cell in mobile communications network and multiple neighboring communities.UE assessment measurement reports standard and attempts access network to transmit measurement report when meeting the standard.Then the UE detect Radio Link Failure perhaps handover failure event and through implement RRC rebuild or RRC establish and reconnect to the network.Finally, UE transmission turkey is reported and gives the network.UE measuring state information of the turkey report comprising the corresponding turkey.The UE measuring state information facilitates network and decides whether using correction behavior to remove the failure.
Description
Technical field
The application requires on November 15th, 2012 to submit according to 35U.S.C. § 119, and application No. is 61/726,847 titles
For the US provisional patent of " radio link failure report extends (Radio Link Failure Report Extensions) "
The priority of application case, the target of above-mentioned application are incorporated as referring to herein.
Disclosed embodiment relates generally to turkey and reports (failure event reporting),
More specifically, being extended about Radio Link in mobile communications network (radio link) failure reporting (failure report)
(extension)。
Background technique
In 3GPP LTE network, evolved universal terrestrial radio access network (Evolved Universal Terrestrial
Radio Access Network, E-UTRAN) it include multiple base stations, such as evolution node B (evolved Node-B, eNB),
Wherein, multiple base stations are communicated with the mobile station for being called user equipment (UE).Radio Link monitors (Radio link
Monitoring, RLM) be a kind of mechanism of UE monitoring downlink (DL) quality with decide whether Radio Link it is good enough with after
It resumes defeated.In addition to RLM, it is proposed that UE can consider to detect Radio Link Failure (RLF) based at least three problems.First,
Physical layer problem (DL Radio Link Failure) based on N310/N311/T310 mechanism.Second, the random access that MAC layer indicates
Problem (UL Radio Link Failure).The problem of third, rlc layer indicates, wherein the problem is to have reached the maximum number of retransmissions
(UL Radio Link Failure).
Connection failure typicallys indicate that out switching (handover, HO) too late, early switches or be switched to very much wrong cell.
In too late HO problem, the connection failure in source (source) cell is sent out before switching is initialised, or in handoff procedure
It is raw.UE attempts to rebuild Radio Link link (if switching is initialised) in Target cell, or be not source (source)
In the cell of cell (if switching is not initialised).It is small from source in handoff procedure, or successfully in too early HO problem
Behind area to the successful switch of Target cell in very short time, connection failure may will occur.UE attempts to rebuild in source cell
Radio Link connection.In the HO problem of wrong cell, very short time after success is switched to Target cell from source cell, or cut
During changing, it may occur that connection failure.UE be not be not in source cell and Target cell cell in attempt to rebuild
Radio Link connection.
" RLF report (report) " is used in LTE system, allows UE by related connection failure event, Radio Link Failure
Or the information reporting of handover failure (handover failure, HOF) is to network.The information includes obtainable geographical location
Information and obtainable mobility measurements result.Current RLF report is for optimizing handoff parameter and detection covering problem.It lifts
Example explanation, it includes that information in RLF report goes optimization UE measuring configuration and HO algorithm behavior that eNB, which can use, to find
Acceptable perhaps alap HO problem rate also finds balanced table tennis (Ping-Pong) rate or HO rate.
But main challenge is that switching efficiency, can be widely different about UE state and configuration.However,
UE state and UE configuration are in current RLF report and without reporting.In many cases, for example, as UE because of connection failure
When going to idle mode, when unsuccessfully occurring, network, which is penetrated, is used for the configuration information of UE using network node to correct RLF report.
In addition, UE internal state, such as speed state (speed state), UE SRB transmission state is for network it is not possible that can
It is learnt by ground.Even if connectivity problem event is reported to network by certain amount UE, network decides whether to need to correct or not
The problem of correcting is needed, is also difficult or impossible.This is because different conditions and the UE of configuration may be expected to
It is not always known that for network with different performance goals and UE state or configuration information.
One object of the present invention is exactly to penetrate to increase in " RLF report " enough UE states and configuration information and solve
Certainly in the prior art the shortcomings that.An object of the present invention is that the information that can be provided compared with Networking Solutions & provisioned provides more height
Authentic communication.UE reports related connection failure event, can enable network insertion and reach with expectation efficiency appropriate
Target.The information can help network to decide whether to correct behavior (corrective action) with removal (mitigate)
Above-mentioned failure.Possible correction behavior may include using less DRX, so UE can more accurately implement wireless measurement, adjust
Whole RLF reports standard, sends the measurement report time with adjustment, through adjustment power control, or uses interference association between cell
It adjusts (ICIC) and enhances the transmission of (enhancing) UL/DL.
Summary of the invention
The present invention provides a kind of method that UE measuring state information is reported in RLF report.In mobile communications network, UE is executed
To the wireless measurement (radio measurement) of serving cell and mutually multiple adjacent cells.UE assessment measurement report standard with
And access network is attempted, to transmit (deliver) measurement report when the standard meets.Then UE detects Radio Link Failure
(radio link failure) or handover failure event (handover failure event), and through implementation nothing
Line resources control (Radio Resource Control, RRC) is rebuild or RRC is established and reconnection is connected to network.Finally, UE will
Turkey report is sent to network.UE measuring state information of the turkey report comprising corresponding turkey.Failure thing
Part reporting state information helps network to decide whether using correction behavior to remove failure.
In in terms of the first novelty, UE measuring state information includes about whether triggering measurement event entry condition, is
The no progress for meeting related measurement report transmission before measurement reports standard and/or turkey to occur
(progression) information.Second beneficial in aspect, and UE measuring state information includes UE speed state or parameter, wherein should
Parameter is influenced by UE speed state, especially in connection mode, the triggering that is adjusted based on UE speed when unsuccessfully occurring
Time (time-to-trigger, TTT) parameter.In third beneficial in aspect, UE measuring state information includes that UE measures efficiency
(performance) information, UE measuring state information indicate which kind of degree UE wakes up to implement to measure.UE measure efficiency with
UEUE applies discontinuous reception (DRX) state related when detecting turkey.
The other embodiment of the present invention and beneficial effect is described in detail below.Summary of the invention is not used in the restriction present invention.
Protection scope of the present invention is subject to claim.
Detailed description of the invention
Fig. 1 is according in terms of novelty, and UE sends the schematic diagram of RLF report in cordless communication network, and wherein RLF is reported
Accusing includes measuring state information.
Fig. 2 is according to a novelty aspect, the simplification block schematic diagram of UE.
Fig. 3 is UE reporting measurement, determines that measurement report and assessment report the detailed process schematic diagram of standard.
Fig. 4 is that UE assessment reports standard and sends measurement report to the detailed process schematic diagram of network.
Fig. 5 is the schematic diagram of (adapt) TTT measurement parameter of UE adjustment.
Fig. 6 is based on UE velocity information, and RLF application before has adjusted the signal of one embodiment of (adapted) TTT
Figure.
Fig. 7 is the schematic diagram of different UE operating states and corresponding measurement efficiency.
Fig. 8 is the schematic diagram for implementing one embodiment of measurement in different DRX states before RLF.
Fig. 9 is to use the method flow diagram of UE measuring state information reporting RLF according to a novelty aspect.
Specific embodiment
Below with reference to for illustrating attached drawing of the invention, the embodiment of the present invention is discussed in detail.
Fig. 1 be according in terms of novelty, in cordless communication network 100, UE send include measuring state information RLF
The schematic diagram of report.Cordless communication network 100 includes UE101, first base station eNB102 and the second base station eNB 103.Step
In 111, UE101 establishes RRC with the eNB102 in serving cell and connect.In step 112, UE101 to serving cell and other
Multiple neighboring communities, for example, eNB103 Target cell wireless signal implement wireless measurement.In step 113, UE assesses one
Measurement reports standard.If meeting the standard, in step 114, UE101 generates measurement report and attempts transmitting measurement report
It accuses to eNB102.
Typically, after receiving the measurement reports, network can determine for UE to be switched to better cell, for example,
The Target cell of eNB103, and implement necessary network signal to prepare more preferable cell.Then network sends HO order to UE.
Then UE may be coupled to more preferable cell.But if the above process there is no (work), when UE leaves serving cell
When, it as a result may be RLF or HOF.Typical failure scene includes that measurement reports and do not arrive network or HO order never reaches
UE。
In step 115, UE101 detects turkey, and generates RLF report.In step 116, UE101 attempts RRC weight
It builds and/or RRC is established and is connected to network with reconnection.For example, UE101 is finally established in the Target cell of eNB103
RRC connection.In step 117, eNB103 sends UE information request to UE101, requests RLF report.In step 118, UE sends UE
Information response is to eNB103, wherein including RLF report.
In in terms of the novelty, UE information includes RLF report and UE measuring state information.Measuring state information side
Network is helped to decide whether using correction behavior to remove failure.Current RLF report purpose is to correct behavior packet for correcting behavior
The update of the parameter containing HO, or the update of basic DL covering parameter.Currently, UL or DL reason is being due to for connection failure
In without clearly distinguishing --- such differentiation can help to find out suitable correction behavior and the correction behavior may be different
In change HO parameter.In fact, the transmission of measurement report may fail in UL and correction behavior can be with UL radio resource pipe
Manage related, rather than mobility is related.Therefore, it is other or additional that the information in relation to UE measuring state, which can help to determine,
RRM corrects behavior, for removing failure, for example, modification UL power control, L1 configured transmission.
Fig. 2 is according to a novelty aspect, the simplification block schematic diagram of user equipment (UE) 201.UE201 includes memory
211, processor 212, RF transceiver 213, wherein RF transceiver 213 is couple to antenna 219.RF transceiver 213 is couple to antenna
219, RF signal is received from antenna 219, fundamental frequency signal is converted to and is sent to processor 212.RF transceiver 213 also will be from
Reason device 212 receives signal and is converted to RF signal and is sent to antenna 219.Processor 212 processing received fundamental frequency signal and
The different function module of UE 201 is excited to implement corresponding function.Memory 211 store control UE201 operation program instruction and
Data 214.
UE201 also includes multiple modules, comprising measurement module 215, reporting module 216, failure detection module 217 and
RRC connection management module 218, wherein measurement module 215 is surveyed for implementing wireless signal measurement, reporting module 216 for assessing
Amount reports standard, and failure detection module 217 is small for implementing for detecting turkey and RRC connection management module 218
Area selects (gravity treatment) and RRC to establish (reconstruction) process.Different function module is can be with software, hardware, firmware or above-mentioned several
The functional module that the combination of person is realized.When functional module is performed by processor 212 (for example, through program code is executed
214), UE201 is allowed accordingly to implement various functions.Base station may include the similar framework of various functional modules to support related function
Energy.
In LTE system, when UE undergoes RLF, RLF report is recorded in VarRLF-Report, such as 220 institute of square of Fig. 2
Show.Typically, RLF report includes following information: serving cell Reference Signal Received Power (reference signal
Received power, RSRP)/Reference Signal Received Quality (reference signal received quality,
RSRQ), most preferably measured neighboring community, location information, unsuccessfully main school district (Pcell) ID, rebuild cell ID, until connection failure
Last HO lapse of time (time elapsed), Fail Type (RLF, HOF), previous main plot (Pcell) ID.Work as UE
Reconnect returns to network, through RRC connection reconfiguration set completion (Connection Reconfiguration Complete),
It is complete that (setup) is set up in RRC connection reconstruction completion (Connection Reestablishment Complete) or RRC connection
RLF available information (RLF-infoAvailable) is indicated at (Connection Setup Complete).Network penetrates UE
Information request (Information Request) obtains RLF information and UE penetrates UE information response (Information
Response RLF information) is reported.
Current RLF report is for optimizing handoff parameter and detection covering problem.For example, network can go correction
To fail for removing.Be observed typical failure scene include measurement report never reach network or switching command from
Not reach UE.Thus it can be assumed that possible correction behavior may include using less DRX, so UE can be without more preferable
Implement wireless measurement under the premise of accuracy, adjust packet standard on RLF, so measurement report is sent early or late, through adjustment function
Rate control, or penetrate using ICIC etc., and improve and transmitted for UL/DL.
In in terms of the novelty, RLF report also includes UE measuring state information, to help network to decide whether, assorted
And how to apply correction behavior to remove failure.First beneficial in aspect, UE measuring state information include about whether
The information that measurement event entry condition is triggered, if information and/or the turkey hair that measurement reports standard to be satisfied
Progress in relation to measurement report (progression) information before death.Second beneficial in aspect, UE measuring state information include by
In the UE speed state or parameter, especially connection mode influenced to UE speed state, the TTT that is adjusted when unsuccessfully occurring
Parameter.For third beneficial in aspect, the UE status information comprising UE measurement performance information indicates that UE wakes up to implement the journey of measurement
Degree.UE measures related using its discontinuous reception (DRX) state when efficiency detects turkey with UE.It is situated between below according to attached drawing
The specific embodiment for the UE measuring state information that continues.
Fig. 3 is to implement to measure according to UE, determines that measurement report and assessment report the detailed process schematic diagram of standard.Such as figure
It completely measures and measures shown in 3, in LTE system and process is reported to include many steps.Point A, UE receive wireless signal and
Implement to measure through to physical layer internal sample.Step 311, the input that UE measures point A implement first layer (Layer-1,
L1 it) filters.How reality is the realization dependent on UE in physical layer execution (input A and L1 filtering) for measurement.Point B comes from L1
Measurement be reported to third layer (Layer-3, L3).In step 312, UE implements L3 filtering for the measurement that B point provides.L3 filtering
Behavior is by standardization and the configuration of L3 filter is provided by RRC signaling.Point C, handle L3 filter after measurement on
Report.Report reporting as rate for rate and B point.For example, the report cycle of point C is equal to a report cycle of B point.Measurement knot
Fruit can be used as the input for the assessment that one or more reports standard.In step 313, UE assesses one or more and reports standard
And decides whether that the actual measurement of point D reports and be necessary.Assessment can based on the more than one measurement stream of reference Point C,
For example, being compared between different measurements.At least when each new measurement result of point C is reported, assessment reports standard to UE.
It reports standard by standardization and configuration is provided by RRC signaling.Finally, point D, measurement report information (measurement report message) is penetrated
Wireless interface is sent to network.
Fig. 4 is that UE 401 assesses the specific embodiment for reporting standard and transmission measurement report to network (eNB402).Step
In rapid 411, UE401 firstly evaluates whether mobility measurements event entry condition meets, to be used to trigger measurement report, but also
The transmission of measurement report is not triggered.Event can be configured to various event entry conditions: event A1 in UE below ---
Than one threshold value of serving cell is good；Than one threshold difference of event A2 --- serving cell；Event A3 --- neighboring community is than service
Cell Pcell is better than an offset；The threshold value of event A4 --- neighboring community than one is good；Event A5 --- serving cell Pcell
It is poorer than first threshold, but neighboring community is better than second threshold；Event A6 --- neighboring community is better than service secondary cell (Scell)
In a deviation；Event B1 --- the threshold value of the neighboring community (inter RAT) than one is good between RAT；And event B2 ---
Pcell is poorer than first threshold and RAT between neighboring community it is better than second threshold.
If meeting event entry condition, that is, the result of step 411 is yes, then UE401 is fixed in step 412 starting TTT
When device.On the other hand, if the result of step 411 is no, UE401 stopping TTT timer (if in timer operation),
And continues assessment mobility measurements event and enter standard.After TTT timer expiry, in step 414, then triggering measurement
Report.In step 421, UE401 generates the transmission of measurement report and initialization survey report.In step 422, UE401 with
Machine accesses on channel (Random Access Channel, RACH) or physical uplink control channel (Physical
Uplink Control Channel, PUCCH) scheduling request is sent to eNB402.In step 421, UE401 is in physical down chain
In road control channel (PDCCH), or enhancing PDCCH (enhanced PDCCH, e-PDCCH) receives response.PDCCH or
EPDCCH includes to pass for UL on physical uplink shared channel (Physical Uplink Shared Channe, PUSCH)
Defeated authorization (grant).In step 441, UE401 sends measurement report to eNB402 on PUSCH.
First, beneficial in aspect, based on above-mentioned detailed measurements and reports process, it is proposed that under UE measuring state information includes
Column information.First, measuring state information includes whether any mobility measurements time entry condition has met.It is increased in this way
The benefit of information is the effect in order to understand TTT used, because of the speed based on adopted UE, an adaptively correction behavior
It may include so that TTT is compared to shorter or longer.
Second, UE measuring state information include when unsuccessfully occurring, and whether the measurement report not being successfully transmitted is touched
Hair is sent.Learn that above- mentioned information can make the problem related to measurement report triggering and send the relevant problem area of measurement report
It separates, so that corresponding correction behavior can be entirely different.If when unsuccessfully occurring, measurement report is not triggered, still
Suitable handover candidate cells are still remained, then main option can be change measuring configuration to trigger measurement report earlier,
For those suitable HO candidate cells.If measurement report has been triggered, but unsuccessfully taking place without success
It sends, then it is possible for changing a possibility that L1 or RRM configuration is to increase successfully measurement report transmission.
The details of third, measurement report transmission progress may be embodied in UE measuring state information hair.It is detailed into
Exhibition information may include at least one in following multiple information: whether scheduling request is sent on RACH, if on PUCCH
Scheduling request is sent, and whether the measurement report on PUSCH is sent.The UL of related measurement report transmission is asked
Such additional information is inscribed, facilitates network and obtains the appropriate correction behavior that do not work and can take in relation to which UL channel
Deeper understanding.If in majority of case, measurement report be triggered and PUCCH unsuccessfully occur when by with
In repetitive schedule request, it would be possible that correction behavior can be used for changing PUCCH setting (setting).
4th, measurement report or mobility measurements event can be recognized by measurement ID.Benefit first is that compression
(compactness) (information is reported in a small amount).But this information, need to know UE measuring configuration, to know how to translate.
It the use of this information can be feasible mode because many Radio Access Networks consistently use same procedure to measure ID.It distinguishes
The another alternative for knowing measurement report is recognized through event id, such as A3, A2, B1 etc..Simplified knowledge in this way
Whole measuring configurations for having triggered measurement report possibly Fu not can not be obtained, but if measurement report has been received,
It which kind of behavior can provide a good clue for.This information is also very succinct under conditions of wireless signaling.
It measures based on UE described in Fig. 3 and Fig. 4 and reports process, can also be observed that the various events of configuration, threshold
Value and lag (hysteresis) value and TTT timer are to control the assessment that measurement reports standard.If unsuccessfully occurred,
One possible correction behavior is to change that the parameter that UE assessment reports standard may be influenced, so that the report of triggering measurement early or late
It accuses.But for doing so, network must be known by which parameter unsuccessfully occur when used.
Fig. 5 is to change TTT measurement parameter schematic diagram using UE for event A3.Event A3 is strong in neighboring community's wireless signal
Degree is when than serving cell Pcell, what a is deviated.In the example of fig. 5, the signal strength of the instruction of line 511 service Pcell,
The signal strength of the instruction of line 521 neighboring community.Time T1, more preferable, this satisfaction of the signal intensity ratio service Pcell of neighboring community
The event entry condition of triggering measurement report.Then UE starts TTT timer in T1.Time T2, TTT timer expiry, this
Trigger the transmission of measurement report.Although the value of network configuration TTT, UE can spontaneously modification/contracting according to the speed of itself
Such parameter is put, to influence mobility efficiency.Network not always knows UE using what parameter value, and therefore, and translation is lost
Report is lost to determine that correction behavior is difficult.For example, network is in order to make to the correction behavior in relation to zooming parameter
Whether does modification speed scaling configure for the no modification basic parameter or network? it is no except the non-network detailed status for knowing UE
Then such problems can not can solve.
Second beneficial in aspect, and UE measuring state information includes UE velocity information or the ginseng that UE speed state is influenced
Number, the TTT parameter for being especially adjusted and scaling based on UE speed in connection mode.Above situation is universal, and speed
Zooming parameter can be treated differently by UE, for example, being based on GPS velocity or L1 Doppler measurement.Speed zooming parameter is main
For filtering out and controlling the triggering of measurement report.Therefore, if unsuccessfully occurred, the measurement assessment in UE is adjacent without determining
Cell is good enough to start to think to trigger measurement report, then speed zooming parameter (for example, TTT) may not influence to fail.
Therefore, changing speed zooming parameter may not be a correction behavior appropriate, and report this parameter may be unnecessarily
Consume wireless transmission resources.Therefore, it is suggested that speed scalability information especially TTT parameter, only when failure occurs and parameter is for extremely
When a few cell, just report.Particularly with TTT, when the measurement event entry condition satisfaction of at least one cell, but correspond to
Measurement report is not triggered or is not successfully sent, the value needs of this TTT report.
Fig. 6 is based on UE velocity information, and RLF is before using the one embodiment for having adjusted (adapted) TTT.Step 611
In, service eNB602 configuration measurement object (object) is used for UE601.Measuring configuration includes the configured TTT for UE601
Value.In step 612, UE601 implements mobility status estimation (Mobility State Estimation, MSE) and calculates UE
Speed state.For example, defining three speed states (high, in and low).Based on network condition, UE601 is changed based on cell
Become count value, in addition to the count value of table tennis (ping-pong) cell change, and oneself automatically derived speed state, it is high, in,
Or it is low.In step 613, UE601 is based on configured TTT value and determines speed and scale TTT parameter.For example, having high speed
Degree state faster moves UE and can apply smaller TTT value；And the more slowly mobile UE with low velocity state can be using bigger
TTT value.By this method, TTT mechanism can be preferably applied to the UE with friction speed state.
In step 614, UE601 implements measurement and assessment measurement reports standard.For example, UE601 measurement comes from
The serving cell of oneself of eNB603 and eNB604 and the wireless signal strength of neighboring community.Assessment measurement reports standard
When, the speed scaling TTT parameter that determines in UE601 applying step 613.In a specific examples, from the adjacent of eNB604
The wireless signal strength of cell is more preferable than serving cell and UE601 is used and adjusted the TTT timing that TTT value starts oneself
Device.In step 615, UE601 detects RLF event.After reconnecting to network, in step 616, RLF is reported to by UE601
The new demand servicing cell ENB604 of oneself.The speed state of UE when RLF report is comprising having adjusted TTT value, and having failed.Based on modulated
Whole TTT value and UE speed state, network can make correction behavior relevant to TTT parameter.
In third beneficial in aspect, UE measuring state information includes that UE measures performance information, and wherein the UE measuring state is believed
Breath indicates that UE wakes up to implement the degree of measurement.Assuming that being measured as UE is discontinuous.The usually not enough nothings of first, UE
Line receives ability and receives and measure in all frequencies and RAT simultaneously.Second, UE are contemplated to do not needing to connect from network
Time receiving closes the receiver of oneself to energy conservation, such as DRX suspend mode.Therefore, UE only on the basis of a regular measurement frequency,
Measure cell to be detected.But the frequency influence of UE measurement is to mobility efficiency.In extreme example, UE can be two seconds with DRX,
Then when UE wakes up, UE may lose a possibility that communicating with old serving cell.Therefore, UE wakes up to implement to measure
Degree be that network needs the important information known, using correction behavior wherein network is known after, which be can wrap
Containing less DRX is used, so UE, which can have, implements wireless measurement more accurately.
Fig. 7 is the schematic diagram of different UE operating states and corresponding measurement efficiency.The top half of Fig. 7 gives difference
The schematic diagram that UE is measured in DRX state.Shown in square 711, in L1 measuring section (L1measurement interval),
UE is calculated using continuous L1 sampled point for RARP/RSRQ.If UE can be generated often from receiver, UE is not turned off
L1 measurement sampling and the reasonable accurate expression therefore with average signal strength, or than quality in L1 measuring section
Reasonable accurate expression.The lower half portion of Fig. 7 gives the schematic diagram that UE is measured in DRX state.As shown in square 721, each
In DRX cycle, when DRX opens (ON), UE wakes up and implements to measure, and the not firm testing amount in DRX suspend mode.When UE frequently
When receiver is closed on ground, UE cannot generate L1 measurement sampling so frequent.DRX suspend mode is longer, then for UE in no lines
It is longer that the reaction time significantly changed is detected in part.It is shorter that UE must wake up the time for implementing to monitor, then L1 measurement samples
The accuracy for representing average signal strength or the quality in L1 measuring section is lower.
Therefore, it is desirable to which UE measurement efficiency depends critically upon DRX state.UE measures how to have reacted at any point in time
True radio condition is referred to as UE and measures efficiency.UE is measured in longer DRX, temporal for any point really without lines
The statistics of part provides worse reaction.That is, worse when the UE measurement longer DRX of efficiency ratio.In one example, UE is realized
The measurement efficiency of 3 different stages.Rank 1 is corresponding and continuously receives identical measurement efficiency.The corresponding following measurement efficiency of rank 2,
Wherein waken up/dormancy period if UE has according to the DRX of configured short DRX cycle,.The corresponding following measurement efficiency of rank 3,
Wherein, according to configured long DRX cycle, there is UE DRX to wake up/dormancy period.When turkey occur when, turkey it
Before (for example, before several seconds) UE determine which measurement efficiency rank the most be suitble to (applicable).
Accurately be aware of when that UE wakes up receives data to network needs, because network and UE need recognizing for DRX suspend mode
Knowing has good synchronization.But DRX state may have in short-term (short-lived) and UE usually in short DRX and company
It resumes and is converted between defeated.Therefore, within the section time before failure, network is not always known about for UE measurement, what DRX
State is available.Furtherly, the reason of causing UE measurement efficiency to change, may be related with the factor other than DRX, for example, UE
It needs to abide by some cases and sets more stringent measurement demand than DRX state.For example, UE may be in HetNet ring
Better mobility efficiency is needed support in border.In this case, it is UE by the phase that network, which can not be clear from,
The mobility of prestige, or connection efficiency is impossible.Therefore, which efficiency rank several seconds for UE before failure determine
It is most suitably used, and this information is provided and is good to network.
Implement the schematic diagram of one embodiment of measurement before Fig. 8 is RLF in difference DRX state.In step 811, UE801
Configuration parameter is received to operate for DRX.In step 812, UE801 receives the configuration parameter for being used for measurement object.In step 813,
UE801 enters a DRX state.In step 814, UE801 implements measurement.In step 815, UE801 makes a DRX state and turns
It changes.In step 816, UE801 is again carried out measurement.In step 817, UE801 detects RLF.UE come determine for RLF which measurement
Efficiency rank is more suitable for.After UE801 reconnection is connected to network, step 818, UE801 sends RLF report to network, this report
The measurement performance information being more likely to when comprising RLF turkey (for example, before X seconds).
Fig. 9 is to report the method flow diagram of the RLF with UE measuring state information according to a novelty aspect.Step
In 901, UE implements wireless measurement to serving cell in mobile communications network and neighboring community.In step 902, UE assessment measurement
It reports standard and attempts access network with when meeting the standard, to transmit measurement report.In step 903, UE detection is wireless
Perhaps handover failure event and transmission implement RRC reconstruction to link failure or RRC is established and reconnected to network.Step
In 904, UE transmission turkey is reported to network.Measuring state information of the turkey report comprising corresponding turkey.
Although so invention is not limited thereto in conjunction with the specific embodiment description present invention for illustrating.Therefore, it is not departing from
Within the scope of spirit of that invention, each feature of embodiment described in the invention can be carry out various modifications, retouched and be closed
And the scope of the present invention is subject to claim content.
Claims (22)
1. a kind of turkey report method, includes:
In mobile communications network, wireless measurement is implemented to serving cell and multiple neighboring communities through user equipment；
Assessment measurement reports standard and attempts to be linked into the mobile communications network to pass if meeting the measurement and reporting standard
Pass measurement report, wherein it includes mobility measurements event entry condition that the measurement, which reports standard,；
Radio Link Failure or handover failure event are detected, and through the radio resource control implemented with the mobile communications network
System is rebuild or wireless heterogeneous networks are established and reconnect to the mobile communications network；And
Transmission turkey is reported to mobile communications network, wherein turkey report includes measuring state information, wherein
The measuring state information corresponds to the turkey.
2. turkey report method as described in claim 1, which is characterized in that whether the measuring state information includes to meet
The measurement reports the information of standard.
3. turkey report method as claimed in claim 2, which is characterized in that whether the measuring state information includes to trigger
The information of measurement event entry condition.
4. turkey report method as described in claim 1, which is characterized in that the measuring state information includes related measurement
Report transmission progress information, the progress information include following several persons at least one: whether sent in random access channel
Scheduling request, if scheduling request is sent in physical uplink control channel and whether in physical uplink shared channel
Send the measurement report.
5. turkey report method as described in claim 1, which is characterized in that the measurement report standard through measurement ID and
Identification.
6. turkey report method as described in claim 1, which is characterized in that the measuring state information further includes
Close the information of user equipment adjustment measurement parameter.
7. turkey report method as claimed in claim 6, which is characterized in that the measuring state information includes to be based on user
The triggered time of device rate state adjustment.
8. turkey report method as claimed in claim 6, which is characterized in that the measuring state information includes that the user sets
Standby speed state.
9. turkey report method as described in claim 1, which is characterized in that the measuring state information further includes survey
Measure performance information.
10. turkey report method as claimed in claim 9, which is characterized in that the measurement performance information indicates the user
Equipment is waken up to implement the degree measured.
11. turkey report method as claimed in claim 9, which is characterized in that the measurement performance information is set comprising user
Standby discontinuous receiving state, wherein the discontinuous receiving state is used when the user equipment detects the turkey.
12. a kind of user equipment reported for turkey, includes:
Measurement module, for implementing wireless measurement to serving cell in mobile communications network and multiple neighboring communities；
Reporting module, for assessing, measurement reports standard and to attempt to access the movement if meeting the measurement and reporting standard logical
Communication network and measurement report is passed into the mobile communications network, wherein it includes mobility measurements thing that the measurement, which reports standard,
Part entry condition；
Failure detection device, for detecting Radio Link Failure or handover failure event；
Wireless heterogeneous networks management module, for after detecting the turkey, for implementing wireless heterogeneous networks reconstruction
Or wireless heterogeneous networks are established, so that the user equipment reconnects to the mobile communications network；And
Conveyer reports for transmitting turkey and gives the mobile communications network, wherein turkey report comprising it is corresponding should
The measuring state information of turkey.
13. the user equipment reported as claimed in claim 12 for turkey, which is characterized in that the measuring state information
Comprising whether meeting the information that the measurement reports standard.
14. the user equipment reported as claimed in claim 13 for turkey, which is characterized in that the measuring state information
Comprising whether triggering the information of measurement event entry condition.
15. the user equipment reported as claimed in claim 12 for turkey, which is characterized in that the measuring state information
Comprising related measurement report transmission progress information, the progress information include following several persons at least one: whether connect at random
Enter and send scheduling request on channel, if send scheduling request in physical uplink control channel, and whether physical uplink
The measurement report is sent on link shared channels.
16. the user equipment reported as claimed in claim 12 for turkey, which is characterized in that the measurement reports standard
It is recognized by measuring ID.
17. the user equipment reported as claimed in claim 12 for turkey, which is characterized in that the measuring state information
Further include the information of related user equipment adjustment measurement parameter.
18. the user equipment reported as claimed in claim 17 for turkey, which is characterized in that the measuring state information
Include the triggered time adjusted based on user equipment velocity information.
19. the user equipment reported as claimed in claim 17 for turkey, which is characterized in that the measuring state information
Include the user equipment speed state.
20. the user equipment reported as claimed in claim 12 for turkey, which is characterized in that the measuring state information
Further include measurement performance information.
21. the user equipment reported as claimed in claim 20 for turkey, which is characterized in that the measurement performance information
Indicate that user equipment is waken up to implement the degree of measurement.
22. the user equipment reported as claimed in claim 20 for turkey, which is characterized in that the measurement performance information
Comprising user equipment discontinuous receiving state, wherein the discontinuous receiving state is when the user equipment detects the turkey
It is used.
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| US61/726,847 | 2012-11-15 | ||
| US14/078,789 | 2013-11-13 | ||
| US14/078,789 US9730090B2 (en) | 2012-11-15 | 2013-11-13 | Radio link failure report extensions in mobile communication networks |
| PCT/CN2013/087122 WO2014075616A1 (en) | 2012-11-15 | 2013-11-14 | Radio link failure report extensions in mobile communication networks |
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| CN104823474A CN104823474A (en) | 2015-08-05 |
| CN104823474B true CN104823474B (en) | 2019-02-05 |
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| EP (1) | EP2783529B1 (en) |
| CN (1) | CN104823474B (en) |
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| WO2014075616A1 (en) | 2014-05-22 |
| CN104823474A (en) | 2015-08-05 |
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| EP2783529A4 (en) | 2015-11-18 |
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